THE EFFECT OF IRRIGATION ON THE STATUS INDICATORS OF SOUTHERN CHERNOZEMS FERTILITY OF NIZHNEDNESTROVSKAYA IRRIGATION SYSTEM
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2014, Vol 19, Issue 3
Abstract
There were conducted the research to identify the nature and direction of change in the modern processes of southern chernozems under irrigation. The research object is the southern chernozem fo the Nizhnednestrovskaya irrigation system. According to the results of soil monitoring studies presented a comparative analysis of the impact of irrigation on the soil conditions in a systematic and limited-selective watering. Irrigation leads to the eluviation of soluble salts down the soil profile. In reduced-selective irrigation during the last 20 years, chernozems desalinization processes are activated. As a result, irrigation significantly changes the composition of southern chernozems exchange and absorbed bases, cations exchange capacity is reduced, the content of calcium decreases and magnesium, sodium and potassium accumulates. In reduced-selective sprinkling a partial restoration of the cations exchange capacity occurs, but the exchange ratio Ca2+: Mg2+ significantly narrowes, the proportion of sodium and potassium increases, that is the indicating of the development of secondary processes (irrigation) alkalinization of southern chernozems. General tendency to dehumification southern chernozems under the influence-selective sprinkling is traced, that is explained by extensive agriculture during the last years. In accordance to the soils granule analysis the irrigation leads to the increase of maintenance of silty fraction, a tendency is marked to the gleization, that is connected, probably, with dispergation of fine sand and large dust. The factor of dispersion increases only in the years of systematic irrigation to the level of weak degree of degradation. Under the influence of irrigation the soil density increases to 1,4 – 1,5 (1,6) g/sm3, that characterizes these soils as weak and average degraded.
Authors and Affiliations
O. I. Tsurkan, Ya. M. Bilanchyn, G. S. Suhorukova, N. I. Tortik
Keywords
Related Articles
- EP ID EP400143
- DOI -
- Views 89
- Downloads 0
FORESTRY LAND USE IN THE СARPATHIAN REGION OF UKRAINE
Based on the data of the State Land Cadastre it was analyzed the structure and geography of the land resources of the Carpathian region of Ukraine both in terms of administrative areas and within land-use lanes. It was d...
PHYTODIVERSITY OF THE RESEARCH TERRITORY OF THE EDUCATIONAL AND SCIENTIFIC STATIONARY OF THE ODESA I. I. MECHNIKOV NATIONAL UNIVERSITY
Problem Statement and Purpose. Biological and landscape diversity is considered as the fundamental property of natural complexes, which ensures their stability and manifests itself at different levels of their hierarchy....
Deposition and distribution of dark gray-ashed soil cations of malehivskiy ridge in conditions of their thermal degradation
Purpose. The purpose of the article is to establish the features of the distribution of exchangeable and soluble cations in Greyiс Luvic Phaeozems of Malehivskiy ridge of Ridged Pobuzhzhya before and after the burning of...
DIFFERENTIATION OF THE LAND ASSESSMENT OF SOIL QUALITY OF THE SOUTHERN PART OF ОDESA REGION
The aim of the study is to assess the quality of soil classification and carrying out territorial differentiation of land as their quality, because this territory belongs to strenuous for the ecology of areas. For the ar...
TRANSFORMATIONAL CONVERSIONS OF MANGANESE HYDROXIDES FROM FERROMANGANESE DEPOSITS OF THE WORLD OCEAN UNDER THE INFLUENCE OF TEMPERATURE
The paper is aimed at investigation and characterization as well as at crystal-chemical interpretation of products of thermo conversions of manganese hydroxides from ferromanganese deposits from different areas in the Wo...